SESSION TIME NOTES:
SID - Session ID of the session
Serial# - Serial# of the session
Username - Oracle username
OS User - Name of the operating system user
Server - Server Type: DEDICATED, SHARED, PSEUDO, NONE, etc.
Status - Status of the session: ACTIVE (currently executing SQL), INACTIVE, KILLED (marked to be killed), CACHED (temporarily caches for use by Oracle*XA)
Type - Session type
Program - Operating system program name
Logon Time - Time session was started
Last Call - Last time session was active